Cartridge Check Valve Housing, 2/pk Back Catalog number: CTS-21010 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended CTS-A138 Ceramic Plunger Assembly Price on request CTS-10984 Sparge Diffuser Price on request 11-4048 PEEK™ Needle Seal, SIL-30AC, SIL-30ACMP Price on request